3979174957381 has 24 divisors (see below), whose sum is σ = 4415030734464. Its totient is φ = 3582582157440.

The previous prime is 3979174957379. The next prime is 3979174957409. The reversal of 3979174957381 is 1837594719793.

It is not a de Polignac number, because 3979174957381 - 2¹ = 3979174957379 is a prime.

It is a super-2 number, since 2×3979174957381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979174957301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27831780 + ... + 27974386.

It is an arithmetic number, because the mean of its divisors is an integer number (183959613936).

Almost surely, 2^{3979174957381} is an apocalyptic number.

It is an amenable number.

3979174957381 is a deficient number, since it is larger than the sum of its proper divisors (435855777083).

3979174957381 is a wasteful number, since it uses less digits than its factorization.

3979174957381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146701 (or 146688 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 73.

The spelling of 3979174957381 in words is "three trillion, nine hundred seventy-nine billion, one hundred seventy-four million, nine hundred fifty-seven thousand, three hundred eighty-one".